CMakeLua/Source/kwsys/String.c

   1 /*=========================================================================
   2
   3   Program:   KWSys - Kitware System Library
   4   Module:    $RCSfile: String.c,v $
   5
   6   Copyright (c) Kitware, Inc., Insight Consortium.  All rights reserved.
   7   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
   8
   9      This software is distributed WITHOUT ANY WARRANTY; without even
  10      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  11      PURPOSE.  See the above copyright notices for more information.
  12
  13 =========================================================================*/
  14 #include "kwsysPrivate.h"
  15 #include KWSYS_HEADER(String.h)
  16
  17 /* Work-around CMake dependency scanning limitation.  This must
  18    duplicate the above list of headers.  */
  19 #if 0
  20 # include "String.h.in"
  21 #endif
  22
  23 /* Select an implementation for strcasecmp.  */
  24 #if defined(_MSC_VER)
  25 # define KWSYS_STRING_USE_STRICMP
  26 # include <string.h>
  27 #elif defined(__GNUC__)
  28 # define KWSYS_STRING_USE_STRCASECMP
  29 # include <strings.h>
  30 #else
  31 /* Table to convert upper case letters to lower case and leave all
  32    other characters alone.  */
  33 static char kwsysString_strcasecmp_tolower[] =
  34 {
  35   '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
  36   '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
  37   '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
  38   '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
  39   '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
  40   '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
  41   '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
  42   '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
  43   '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
  44   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
  45   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
  46   '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
  47   '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
  48   '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
  49   '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
  50   '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
  51   '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
  52   '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
  53   '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
  54   '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
  55   '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
  56   '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
  57   '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
  58   '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
  59   '\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
  60   '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
  61   '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
  62   '\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
  63   '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
  64   '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
  65   '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
  66   '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377'
  67 };
  68 #endif
  69
  70 /*--------------------------------------------------------------------------*/
  71 int kwsysString_strcasecmp(const char* lhs, const char* rhs)
  72 {
  73 #if defined(KWSYS_STRING_USE_STRICMP)
  74   return _stricmp(lhs, rhs);
  75 #elif defined(KWSYS_STRING_USE_STRCASECMP)
  76   return strcasecmp(lhs, rhs);
  77 #else
  78   const char* const lower = kwsysString_strcasecmp_tolower;
  79   unsigned char const* us1 = (unsigned char const*)lhs;
  80   unsigned char const* us2 = (unsigned char const*)rhs;
  81   int result = 0;
  82   while((result = lower[*us1] - lower[*us2++], result == 0) && *us1++)
  83     {
  84     }
  85   return result;
  86 #endif
  87 }
  88
  89 /*--------------------------------------------------------------------------*/
  90 int kwsysString_strncasecmp(const char* lhs, const char* rhs, size_t n)
  91 {
  92 #if defined(KWSYS_STRING_USE_STRICMP)
  93   return _strnicmp(lhs, rhs, n);
  94 #elif defined(KWSYS_STRING_USE_STRCASECMP)
  95   return strncasecmp(lhs, rhs, n);
  96 #else
  97   const char* const lower = kwsysString_strcasecmp_tolower;
  98   unsigned char const* us1 = (unsigned char const*)lhs;
  99   unsigned char const* us2 = (unsigned char const*)rhs;
 100   int result = 0;
 101   while(n && (result = lower[*us1] - lower[*us2++], result == 0) && *us1++)
 102     {
 103     --n;
 104     }
 105   return result;
 106 #endif
 107 }